mybatis plus中的LambdaQueryWrapper根据Lambda表达式获取字段的原理

参照地址 https://blog.csdn.net/leisurelen/article/details/105980615

自我实现方式：也是看上述文章而来

import java.io.Serializable;
import java.lang.invoke.SerializedLambda;
import java.lang.reflect.Method;
import java.util.function.Function;

public class LambdaTest {


    public static void main(String[] args) throws Exception {
        SerializedLambda serializedLambda = doSFunction(TestDemo::getId);
        System.out.println("方法名：" + serializedLambda.getImplMethodName());
        System.out.println("类名：" + serializedLambda.getImplClass());
    }

    private static <T, R> java.lang.invoke.SerializedLambda doSFunction(MFunction<T, R> func) throws Exception {
        // 直接调用writeReplace
        Method writeReplace = func.getClass().getDeclaredMethod("writeReplace");
        writeReplace.setAccessible(true);
          //反射调用
        Object sl = writeReplace.invoke(func);
        java.lang.invoke.SerializedLambda serializedLambda = (java.lang.invoke.SerializedLambda) sl;
        return serializedLambda;
    }
}
@FunctionalInterface
interface MFunction<T, R> extends Function<T, R>, Serializable {
}